Apparatus for continuous extraction of soluble material.



PATENTED' JAN. 3, 1905.

B. RATAILLR. APPARATUS FOR CONTINUOUS EXTRACTION OP LURLR MATERIAL.

APPLICATION IILED APR. 3, 1902.

3 SHEETS-SHEET 1.

PATENTED JAN. 3, 1905.

E. BATAILLE. APPARATUS FOR CONTINUOUS EXTRACTION OF SOLUBLE MATERIAL.

APPLICATION FILED APR. 3, 1902.

3 SHEETS- 1 b nN vs No.779,022. A PATENTED'JAN.3,1905.

' E. BATAILLE.

APPARATUS FOR CONTINUOUS EXTRACTION OF SOLUBLE MATERIAL.

. APPLIOATIOKIILED APR. 3, 1902.

3 SHEETS-SHEET 3- lUNirEn STATES Patented January 3, 1905.

A'r-ENr rricn.

EDOUARD BATAILLE, OF PARIS, FRANCE.

SPECIFICATION forming part of Letters Patent No. 779,022, dated January 3, 1905.

Application filed April 3,1902. Serial No. 101,206.

To all whom it may concern:

Be it known that l, EDOUARD BATAILLE, engineer, a citizen of the Republic of France, residing at 1 1 Avenue de Malakoif,Paris,France, have invented certain new and useful Improvements in Apparatus for the Continuous Extraction of Soluble Materials, of which the following is a specification.

This invention relates to improved apparatus for the continuous extraction, by means of sulfid of carbon, benzene, tetraehlorid of carbon, petroleum-ether, or other appropriate solvents, the fatty substances contained in oleaginous grains and other substances finely or roughly ground, either dry or moist, granulous or pasty. As another example of the application of the apparatus I will mention the extraction, by sulfid of carbon, of sulfur contained either in sulfur minerals or in the residues of gas-purifiers.

My invention has for its object the realization in an absolutely practical manner of the process, which consists in producing the circulation of the material in a Washer in the inverse direction to the flow of the solvent until it is completely exhausted, after which it is treated in a drier, while the saturated solvent is treated in such a manner as to separate or recover the matter dissolved therein.

It is characterized by the mode of opera tion, the disposition, the arrangement, and the combination of the washer, the drier, and of the apparatus for use in the separation of the dissolved materials and the solvent and also for the complete recovery of the latter.

In my system the entire treatment is effected in an absolutely automatic manner regularly and continuously, so that the Work is carried out under the best conditions for its industrial success. charging, discharging, and other operations are dispensed with, so that the rapidity of the work is considerably increased. One consequence of this rapidity is that the dissolved material has not the time to be affected by the contact with the solvent, thus obtaining products of excellent quality. This result is due, moreover, to the fact that the operation of separating the solvent from the dissolved material is conducted in cacao, which permits of Indeed, the operations of effecting the separation in the best conditions of temperature for the quality of the extracted products. This permits at the same time of great economy in steam. To this economy is added that of wages and that resulting from the total suppression of the loss of solvent by avoiding as far as is possible not only the ingress and egress of air, but also by recuperating in an absolutely complete manner the solvent which may have passed away with the air during circulation.

In order to simplify the specification, I will presume in the following description my system as applied to the extraction of oil or fatty matters.

8O designates a distributer of the material to be exhausted which feeds the washer 81.

The material is delivered into the washer in a continuous manner, and at the same time it is subjected to the action of the solvent, which circulates in an inverse direction. The exhausted material upon arriving at the end of the washer is taken up by an elevator 82, which conducts it to the drier 83, which it traverses from end to end, and is finally taken up by a conveyer 84 and passed into an ejecting apparatus provided with an outlet-slide 85. The solvent enters the washer through a pipe 86 and passes through the said washer from end to end in the opposite direction to the material being exhausted. at 20 in a saturated condition and enters the evaporator 1 and thence passes into the purifiers 2 and 3. A vacuum is created in the apparatus 1 2 8 by means of a pump 6, the suction from which acts through the pipe 49, receiver 5, pipe a l, the condenser 93, and the pipes 88, 4:1, and 42. The steam and vapors from the solvent are thus drawn off by the The solvent new issues apparatus 1 2 3, together with the air that may be contained in the latter, these vapors, condensed at 93, being received at 5 and the air charged with vapors being drawn off by the pump 6 and delivered into a series of apparatus hereinafter described, with a view of freeing it from the vapors it may still contain. These condensed vapors return to the receiver 5, and the liquid contained in this latter is sent into the separator 91, Where also arrive, after the passage through the pipe 92 and the condenser 94,the air and the steam and the solvent which escapes from the drier 83.

Having thus broadly indicated the general manner of operating, I will now describe each of the necessary apparatus for the execution.

Distribute?" 80.It is constituted of a casing fitted with a worm which receives the material from a hopper 87. This casing opens into the washer 81 through an orifice closed by a flap 96 with counterpoise. In'the casing 80 is mounted a worm 95, which by rotating moves the material toward the flap 96; but the latter being weighted cannot open until it receives a certain pressure, with the result that the outlets of air and steam are blocked.

I Vas/ier 81.This washer (shown in detail at Figs. 2, 3, and 4) is constituted of a large rectangular casing, which is closed tight by a cover 108 and divided into longitudinal compartments by vertical partitions 110, 111, and 112. The successive compartments are placed alternately in communication with their opposite extremities by arresting said partitions before they reach the extreme partition of the casing, as will be seen at 72 73 74. The compartments thus constituted are formed in the shape of troughs whichare of greater height than width and which have in their lower angles pieces of wood 118 of triangular section fitted therein. In each of them is mounted a conveyer-screw 99, 105, 106, or 107, which are made with a small pitch and reduced to a certain of these parts forming the blades 109, slightly inclined with regard to the perpendicular plane of the axis of the screw. Upon theshaft of the screws 99, 105,

and 106 are keyed in face of openings 72 73 74 wheels having inclined or curved blades 100, 75, and 76, which eject the matter from each compartment into the next one. In each compartment are freely suspended above the screws from distance to distance the transverse partitions or baiiies 114. Lastly, in the first compartment 98 in front of the inlet of the material is formed a chamber 116, which is separated from the rest of the compartment by a perforated column 115. In this chamber are disposed filtering-pockets 117, the interior of which is in communication with the outlet-socket 77, disposed beneath the apparatus.

The material, admitted into the washer at 97, Fig. 4, moves through the compartment 98, Fig. 3, from the front toward the rear, through the action of the screw 99, is then ejected by the wheel 100 into the compartment 102, through which it movesfrom rear, to front. It is then ejected from this chamber in the same manner into the compartment 103. toward the rear it is passed into the compartment 104 at the opposite extremity, from which it is taken by the elevator 82. The solvent is admitted into the head part of the compartment 104, Fig. 3, through the conduit 86, Fig. 1, and passes through the apparatus in an inverse direction to that of the materials which it is required to exhaust. The baflies 114 oblige it to remain inthe mass of the material under treatment. Arrived at 97, Fig. 4, the saturated solvent of the grease traverses the perforated plate'115 and arrives at 116. It penetrates in the filtering-pockets 117 and leaves in a perfectly pure condition through the tubular socket 7 7 so as to pass through the tube 20, Fig. 1, to the evaporator 1.

It should be remarked that the circulation is effected horizontally in the washer. This permits of having everywhere an equal pressure, a uniform level for the solvent in all the compartments,and consequently an absolutely regular action. On the other hand, the dis position of the egress of the saturated solvent permits the totality of the liquid being easily evacuated from the apparatus. In order to gain access to all the parts of the washer, it suflices to remove the cover 108 and the bearings are all accessible from the exterior.

Elewtor 8?.This elevator or conveyer consists of an endless chain furnished with plates or scrapers 126 and moving within an inclined casing which opens at the lower end into the compartment 104 of the washer and at its upper end into the hopper 119, secured to the cover of the drier with which it communicates. At the lower end the chain passes over a driving-pinion or sprocket-wheel 120, keyed to the shaft of the screw 107, while at the upper end said chain passes over a chainstretching pulley 121, the shaft of which latter is mounted in sliding bearings 123 in guideways 124 and adjusted in position by screws 125.

The plates or scrapers 126pick up the spent material in the compartment 104 of the washer and move it slowly upward within the inclined tube or casing 82, so that it has time to drain before it is finally delivered into the drier.

Drier 83.It is established essentially in the same manner as the washer, from which it differs, however, in not having any baffles, while having a double bottom 127 for heating by steam, forwhich purpose there are provided steam-inlets 128 in the third and fourth compartments.

In the first compartment of the drier the heat derived through the double bottom dis tils the solvent; in the second compartment After moving through same from front IIO the material is superheated; in the third and fourth compartments it is subjected to the clirect action of the steam, it being sufliciently heated to prevent the steam being condensed. The dry material is picked up by the conveyer 81, which is similar to 82, and is then discl'iarged through an apparatus fitted with screw and flap 85, analogous to the distributer 80, which apparatus is arranged to prevent the escape of steam and the entrance of air. The steam and vapors of the solvent, together with the air contained in the drier, pass into the condenser 94 through the pipe 92.

illEc/rmrical clrioing-gecmTo insure the regularity and continuity of the operations, all the movable parts of the various apparatus hereinbefore described receive motion from the same shaft 129. This main drivingshaft controls the conveyer-screws of the washer and the drier and by this fact also controls the projecting-wheels of said apparatus and the conveyer chains 82 and 8 1 through the intervention of beveled Wheels 130. It further actuates the screws of the apparatus 80 and 85 by means of the pulleys and belts 131, 132, 133, 134, 135, and 136, Figs. 1 and 3.

In order that the conveyer-screws of the washer and the drier shall move the material toward the next compartment and to cause the conveyers 82 and 84L to operate in the proper direction, it is necessary for all the shafts of the washer and the drier to rotate in the same direction, while as a result hereof the successive driving-screws of the washer and the drier require to have the screw-blades disposed in opposite directions to each other.

The system of apparatus herein described is not only applicable for the extraction by means of asolvent of soluble materials. For

other applications I would cite the treatment -the apparatus through an auxiliary orifice,

such as 200, Fig. 3, and thereupon a solvent for the fatty bodies is supplied through the ordinary inlet 86, Fig. 1. The oil upon entering is diluted by the solvent and is carried along with it toward the outlet for the solution and becomes decolored during its circulation. On the other part, the fullers earth during the last portion of its circulation is subjected to the action of pure solvent, and therefore leaves in a completely-ungreased condition for its reception in the drier.

What I claim, and desire to secure by Letters Patent of the United States, is

1. For the continuous treatment, by means of asolvent of materials in the form of grain, paste, or pulp, a closed washing-receiver divided into longitudinal compartments in form of troughs disposed horizontally at the same uniform height and in communication with each other alternately by their opposite ends, a horizontally-disposed worm mounted in each compartment and with threads arranged in opposite directions for drawing in the material, Wheels with inclined blades mounted on the screw-shafts for projecting the material from one compartment to another and baflles freely suspended above the screws in each compartment, the whole essentially in the manner as and for the purpose indicated.

2. For the continuous treatment, by a solvent, of materials in the form of grain, paste or pulp, a closed washing-receiver divided into longitudinal compartments to form troughs arranged horizontally at the same uniform height and communicating with each other alternately with their opposite ends, means for circulating the material being treated successively in all the compartments, a perforated partition disposed in the first compartment to form a small chamber to which the said materials have no access and in which arrives the saturated solvent, and filtering pockets provided in said chamber for filtering the liquid before its escape, essentially in the manner and for the purpose indicated.

In testimony whereof I have hereunto set my hand, in presence of two subscribing Witnesses, this 20th day of March, 1902.

EDOUARD BATAILLE.

Witnesses:

HENRY BERTJN, EDWARD P. MAGLEAN. 

